- Short rotation forestry
Short Rotation Forestry (SRF) is grown as an
energy crop for use in power stations, alone or in combination with other fuels such as coal. It is similar to historic fuelwoodcoppice systems.Species used
SRF is the practice of cultivating fast-growing trees that reach their economically optimum size between eight and 20 years old. Species used are selected on this basis and include
Alder , Ash, SouthernBeech ,Birch ,Eucalyptus ,Poplar ,Willow , andSycamore .Planting and harvesting
Trees are planted at widths that allow for quick growth and easy harvesting. They are usually felled when they are around 15cm wide at chest height, this takes from 8 to 20 years. This compares with 60 years or more for standard
forestry crops. When felled, SRF trees are replaced by new planting or, more usually, allowed to regenerate from the stumps as coppice. The wood chip produced by SRF is preferred in the power industry as it does not contain bark and wood and is therefore more homogenous than wood chip provided byshort rotation coppice . The profit after transport is estimated to be around €15 to €30 per tonne.Greenhouse gas impact
During growth SRF will offer significant
carbon sequestration . The main carbon cost is associated with haulage of the harvested trees.Environmental impact
Some species such as Eucalyptus have a high water usage, this is especially important given the changing water patterns due to climate change. There are also potential impacts on biodiversity and the effects of large scale SRF on flora and fauna are not known.
See also
*
Energy forestry
*Miscanthus
*Non food crops
*Short rotation coppice
*Switchgrass
*Wood fuel References
* [http://www.forestry.gov.uk/newsrele.nsf/WebPRByCountryLang/E09728F06ED2D7CE8025710000537C7D Potential seen to develop short-rotation forestry for wood fuel]
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